JPH04366363A - Cooking method and device using solar heat - Google Patents

Abstract

PURPOSE:To use solar heat and cook food effectively by taking out steam generated by the central irradiation of solar to a pipe in which water flows from the pipe and communicating the steam heat with a container which houses food. CONSTITUTION:There is installed a reflecting mirror 21 which is parabola- shaped in its cross section and continuous to the cross section in a linear direction or a pipe 1 which allows water to flow to the focal point of a Fresnel lane or its vicinity. A water supply section is installed to the start point of the pipe 1 while a steam take out port 12 is installed to the end point of the pipe. The start point is communicated with the end point so that water may be circulated. The steam generated by the sun light is introduced into a container 4 which houses food 5 from the steam take out port 12 of the pipe so as to boil the food 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention As is clear from the name of the invention, the present invention relates to a method and apparatus for cooking food using solar heat.

0002

[Prior Art] In recent years, many efforts have been made to utilize solar heat in homes, etc., such as indoor lighting by sunlight, indoor heating by sunlight, and heating of water by irradiating it with sunlight. The use of hot water for this purpose is being carried out.

[0003] However, attempts have been made to cook food using solar heat, but no effective results have been obtained.

[0004] This uses the analogy of the invention of solar cells to
Even if this could be converted into electrical energy, obtaining the electricity necessary to cook food would require solar cells with an extremely wide area, which would be far from profitable.

[0005]

However, steaming food has extremely high thermal efficiency and can be cooked using less heat energy than directly baking or boiling food.

The present invention has focused on this point, and an object of the invention is to provide a method and apparatus for cooking food by converting water into steam using solar heat.

[0007]

[Means for solving the problem] In order to solve the above problem,
In the method of the present invention, a pipe through which water flows is irradiated with concentrated sunlight to generate steam from the water, and the steam is taken out from the pipe and communicated with a container containing food. It consists of a method of cooking plants using solar heat by steaming them.

[0008] A device for realizing such a method also includes a pipe through which water passes, an optical device for concentrating and irradiating sunlight onto the pipe, and a food container communicating with the steam outlet of the pipe. It consists of a food cooking device that utilizes solar heat by providing a container.

That is, the method and device of the present invention heats or boils the water by concentrating and irradiating the pipe with sunlight while the water is flowing through the pipe, thereby reducing the amount of water produced from the water. The steam is extracted and applied to a container containing food to steam the food.

0010

[Example] The following is an explanation based on an example.

1, 2, and 3, a reflecting mirror with a parabolic cross section and continuous in a direction perpendicular to the cross section is used as a device for concentrating and irradiating sunlight. An example (hereinafter referred to as "first example") will be shown.

In FIG. 2 and the first embodiment, the pipe through which water flows is required to be located at or at least in the vicinity of the focal point of the parabolic cross section.

[0013] Of course, in order to concentrate and irradiate the sunlight energy to the extent that steam is generated from the water stored in the pipe, the width of the reflecting mirror in the parabolic direction and the length in the direction orthogonal to this are required. , Applicant et al.'s experiments have confirmed that if the area defined by the width in the parabolic direction and the length in the direction orthogonal to this is approximately 4 square meters or more, water vapor at a temperature that can steam food can be generated. .

It is optimal for the center line of the parabola shown in FIG. 1 to point toward the sunlight side, but since this varies depending on the season, it is appropriate to adjust the angle sequentially.

Furthermore, in FIG. 2, the transverse cross sections of the pipe and the reflecting mirror are linear, but the shape is not necessarily limited to a straight line, and can be used even if it is curved ( However, if the horizontal direction of the pipe and reflector is curved, it becomes complicated to adjust the angle of the center line of the parabola depending on the season.)

FIGS. 4, 5 and 6 show an example (1) using a Fresnel lens as a device for concentrating and irradiating sunlight.
(hereinafter referred to as the "second embodiment").

Of course, the pipe through which water flows is required to be located at or near the focal point of the Fresnel lens.

Furthermore, it is appropriate to adjust the angle of the Fresnel lens according to the season, as in the case of the first embodiment, and in FIG. Although a case is shown in which the pipe is linear and the transverse cross section of the Fresnel lens is linear, the shape is not necessarily limited to such a shape, as in the case of the first embodiment.

[0019] By the way, the water flowing through the pipe gradually turns into steam and moves from the outlet to the container containing the food, but it is inevitably necessary to replenish the water when it runs out.

In FIG. 2, the starting end and the ending end of the pipe where sunlight is concentrated and irradiated are not connected, and water is simply supplied from the starting end and water is supplied from the ending end. This shows the configuration in which water vapor comes out.

In FIG. 5, the starting end and the ending end of the part of the pipe where sunlight is concentrated and irradiated are connected, which enables water circulation, and water can be replenished midway through the circulation. An example performed at the site is shown.

In the first embodiment, as shown in FIG. 2, for example, by placing the water supply port at a higher position than the water vapor outlet, water can be supplied automatically. In the second embodiment, as shown in FIG. 5, a device for circulating water from the outside is required.

[0023]

Effect of the Invention In the method and apparatus of the present invention as described above, if water is simply supplied and moved (in the case of FIG. 2) or circulated (in the case of FIG. The above-mentioned food is inevitably generated from the outlet, and by passing this into a container containing food, it becomes possible to automatically cook the food.

[0024]

[Effects of the Invention] The present invention configured as described above makes it possible to cook using solar heat, and is extremely economical in that it does not require the use of gas, electricity, etc. as in conventional cooking methods. Moreover, by simply supplying water and storing food in a container, food can be cooked by steaming after a certain period of time, so food can be cooked extremely easily.

[0025] As described above, the present invention is groundbreaking in that it actually applies solar heat to cooking food, and its value is enormous.

[Brief explanation of drawings]

[Figure 1] Cross-sectional diagram showing the configuration of the first embodiment using a reflecting mirror with a parabolic cross section

FIG. 2 is a top view showing a situation in which the starting end and the ending end, where sunlight is concentrated and irradiated, are not in communication with each other in the first embodiment.

FIG. 3 is a partial side view of the first embodiment, showing a state in which the outlet and the container containing food are in communication with each other.

FIG. 4 shows a second embodiment in which a Fresnel lens is used as a device for concentrating and irradiating sunlight.

FIG. 5 is a top view showing a situation in which the starting end and the ending end of the area where sunlight is concentrated and irradiated are in communication in the second embodiment.

FIG. 6 is a partial side view showing a situation in which the steam outlet and the food container are in communication with each other in the second embodiment.

[Explanation of sign]

1: Pipe 11: Water supply port 12: Steam outlet 21: Reflector 22: Fresnel lens 3: Focus position 4: Container containing food 5: Food

Claims (4)

[Claims] Claim 1: Generate steam from water by concentrating and irradiating sunlight on a pipe through which water flows,
A method of cooking plants using solar heat, comprising steaming the food by extracting the steam from a pipe and communicating it to a container containing the food. Claim 2: Utilizing solar heat by providing a pipe for passing water, an optical device for concentrating and irradiating sunlight on the pipe, and a container for storing food communicating with the steam outlet of the pipe. food preparation equipment [Claim 3]
As an optical device for concentrating and irradiating sunlight, a reflecting mirror with a parabolic cross section and a continuous shape in a direction perpendicular to the cross section is used, and water is caused to flow at or near the focal point of the parabola. The food cooking device using solar heat according to claim 2, characterized in that a pipe is located therein. 4. Food using solar heat, characterized in that a Fresnel lens is used as a device for concentrating and irradiating sunlight, and a pipe for flowing water is located at or near the focal point of the Fresnel lens. [Claim 5] A water supply port is provided on the starting end side of the pipe where sunlight is concentrated and irradiated, a steam outlet is provided on the terminal end side, and the starting end and the terminal end communicate with each other. [Claim 6] A water supply port is provided on the starting end side of the pipe where solar heat is concentrated and irradiated, and the above-mentioned food cooking device is provided on the terminal end side. 3. The food cooking device using solar heat according to claim 2, wherein water can be circulated by providing an outlet and communicating the starting end and the ending end.